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E A. T UTTLE. Hot-Air Register.

No. 225,083. Pat-en ted Mar. 2, 1880.

UNITED STATES PATENT OFFICE.

EDWARD A. TUTTLE, OF NEW YORK, N. Y.

HOT-AIR REGISTER.

SPECIFICATION forming part of Letters Patent No. 225,083, dated March 2,1880.

Application filed September 25, 1579.

To all whom it may concern.-

Be it known that I, EDWARD A. TUTTLE, of New York city, in the countyand State of New York, have invented a new and useful Improvement inHot-Air Registers, of which the following is a specification.

My invention consists of ribs for strengthening the top fret-work of theregister, extending longitudinally with andinto the spaces between thefans when open, and being so arranged as not to interfere with theopening and closing of the fans, although having such breadth as toextend into said spaces. The said ribs are made of a proportional sizeand thickness with the whole to forum support for the top plate when theregister is placed in the floor, to enable said plate to support withoutbeing thickened the weight of persons stepping on it, thus affordingsufficient strength for that location with the same light fret-work asis used in the wall, the same being more open, of less weight, and alsomore pleasing in effect than if made heavy enough for the requiredstrength without the ribs.

Figure l is a front elevation of a register constructed according to myinvention. Fig.

2 is a longitudinal section of the same, and Fig. 3 is a transversesection.

A is the fret-work front or top plate of the closedthatis to say, nearlyto the pivots of the fansso as to project into the spaces between themwhen open, and in such relation thereto that the fans are permitted toturn freely to open and close. Thus the light and fine fretwork, whichis cheaper, more open, and also more pleasing to the eye, may bepreserved, and at the same time all the strength needed for safety whenlocated in the floor may be had.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-- The fret-work plate having ribs Bext-ending longitudinally with and projectinginto the spaces between thefans when open, as set forth.

EDWARD Al TUTTLE.

Witnesses i F. A. THAYER, O. T. BURT.

